OUR SOLAR SYSTEM

THE SUN

• Is our main source of light and heat
• Rotates once every 27 days
• Is the closest star to earth
• The suns diameter is about 870,000 miles wide
• The sun is 109 times wider than the earth

MERCURY

• The first planet in our solar system.
• Is slightly bigger than our moon.
• Has no atmosphere unlike Earth.
• Is now the smallest planet in our solar system.
• Has a very rocky surface and craters.

VENUS

• Has a very thick atmosphere
• Has clouds made of sulfuric acid
• You would burn up in temperatures hot enough to melt lead
• Is made up of mostly carbon dioxide
• You would be about 90 times heavier on Venus

EARTH

• We are the only planet with life(that we know of.)
• We are the only planet with liquid water.
• We are the only planet with breathable atmosphere.
• Sometimes referred to as the world or the Blue Planet.
• The largest of the four terrestrial planets.

MARS

• Known as the red planet.
• Has the tallest volcano in the solar system.
• The atmosphere is mostly carbon dioxide.
• A hundred pound man would weigh 38 pounds on Mars.
• It orbits the sun every 687 Earth days.

JUPITER

• Is the largest planet in our solar system.
• Unlike some other planets, Jupiter has rings.
• Has over 60 known moons.
• The days are only 10 hours long on Jupiter.
• Jupiter's volume is large enough to contain 1,300 Earths.

SATURN

• Has over 30 known satellites(moons.)
• Has no solid surface.
• A 100 pound object would weigh 116 pounds on Saturn.
• It takes about 29.5 Earth years to rotate once.
• The rings are made up of millions of pieces of rocks and dust.

URANUS

• Was the first planet discovered by telescope.
• Uranus spins lying on its side.
• Takes 84 Earth years to rotate once.
• Has 27 known satellites.
• Is the coldest planet in the solar system.

NEPTUNE

• Has 19 known moons.
• Goes around the sun once every 165 Earth years.
• Has a rocky core.
• Is the stormiest planet.
• Once had a great dark spot like Jupiter.

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